Nikon 2219 Teleconverters AF-S Teleconverter Black Type: Converters & Adapters Format: Nikon FX/35mm Film Camera Mount: Nikon F Compatibility: Nikon Focus Type: Auto Focus Lens Construction: 7 elements in 4 groups Specifications: AF-S (Silent Wave Motor): Yes G-type: Yes Dimensions: 2.50 x 0.90 (Diameter x Length)